SW18020P Vibration Sensor - Digital Spring Switch Module
SW18020P Vibration Sensor — Digital Spring Switch Module
The SW18020P is a vibration sensor module that uses a spring mechanism to detect motion or impact. It outputs a clean digital signal when vibration exceeds a set threshold, making it easy to integrate with microcontrollers for security alarms, tap detection, and activity monitoring. Its onboard potentiometer allows precise sensitivity adjustment for various applications.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 3.3V – 5V DC |
| Output Type | Digital (active low) |
| Sensitivity Adjustment | Yes, via onboard potentiometer |
| Interface | 3-pin (VCC, GND, DO) |
| Dimensions | 32 mm × 14 mm |
What You Can Build With This
- Motion-activated alarm system
- Tap-sensitive control panel
- Seismic or impact detection logger
- Smart wearable activity tracker
Compatibility
Compatible with any 3.3V or 5V microcontroller, including Arduino Uno, Nano, ESP32, and Raspberry Pi (with level shifting for 5V tolerant pins). Connect the digital output to any GPIO pin.
Wiring Notes
Connect VCC to 3.3V or 5V, GND to ground, and DO to a digital input. No external pull-up is needed; the module outputs a low signal when vibration is detected. Adjust the sensitivity screw until the desired threshold is reached.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, it works directly with any Arduino board. Connect VCC to 5V, GND to GND, and DO to a digital pin, then read the pin state.
Can I use this to detect slight movements?
Yes, the onboard potentiometer allows you to increase sensitivity to detect even small vibrations, making it suitable for tap detection or tilt sensing.
What is the output when no vibration is present?
The digital output remains high (at VCC level) when idle, and goes low when vibration exceeds the threshold, providing an active-low signal.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items